In 1940, she joined an artistic singing group which had a show called "Industrias Nativas" (Native Industries) and which was transmitted through the radio station "WIAC", until 1945.
[1] During World War II, Ross entertained the troops with her voice in "USO shows" (United Service Organizations).
After touring with the USO, Ross went to New York City where she performed in many hispanic theaters, among which was "El Teatro Puerto Rico".
She recorded the boleros "Diez Años" (Ten Years) by Rafael Hernández and "Aunque Me Llores" (Even if you cry for me) by Claudio Ferrer.
In 1948, she recorded 49 danzas written by composers such as Juan Morel Campos, Manuel Gregorio Tavárez, Rafael Alers and Ángel Mislan among others.